The highlighted phrase seems out of place with the rest of your reply. Maybe you could clarify.
Well the Baptists had no creed at that time, admission into fellowship was upon baptism by full immersion. Spurgeon believed, and I am certain he was right, that the whole of the dissenting church was being deliberately targeted by men who did not believe certain doctrines such as the virgin birth, atonement at the cross, the resurrection etc.
These were men affected by "the enlightenment" and they came on a mission, many had found their way into the largest pulpits and the bible schools. Nonconformity was BIG in Britain in those days.
Spurgeon wanted the Baptists to formulate a creed in order to drive them out. Others who did agree with Spurgeon as to his warnings felt he was wrong in calling for this action and that such a plan was divisive and would bring about open warfare.
I think they were right and I think the Holy Ghost even through Spurgeon himself would have gotten victory.
Spurgeon was a leader of no small stature in Nineteenth century christendom.